Gprs
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The document describes the process by which a mobile station (MS) detects incoming circuit-switched calls while operating on PCCCH channels in network operation mode I. Upon recognizing its IMSI in a GPRS paging request, the MS activates CCCH channels to request radio resources for responding to the paging. The paging process is concluded when the MSC/VLR receives a connection establishment message from the MS.
Gprs
- 1. In a cell supporting PCCCH channels and operating in network operation mode I, an MS both IMSI and GPRS attached monitors the PCCCH channels in order to detect incoming circuit- switched calls. As soon as the MS recognizes its IMSI identifier in the GPRS PAGING REQUEST message received on the PPCH, it switches on the CCCH channels and requests the network to allocate radio resource in order to answer to circuit-switched paging. The MSC/VLR stops the paging procedure upon receipt of an SCCP connection establishment containing the paging response message from the MS via the A interface. This scenario is shown in Figure 7.9.